:root {
    --bg-dark: #0a0a0c;
    --accent-primary: #818cf8;
    --accent-secondary: #c084fc;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.8);
    --radius: 24px;
    --font-main: 'Plus Jakarta Sans', sans-serif;
    --font-hero: 'Outfit', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Background Animations */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    animation: move 20s infinite alternate;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: var(--accent-primary);
    top: -100px;
    right: -100px;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: var(--accent-secondary);
    bottom: -100px;
    left: -100px;
    animation-delay: -5s;
}

.blob-3 {
    width: 300px;
    height: 300px;
    background: #4ade80;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.05;
}

@keyframes move {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(100px, 100px) scale(1.1); }
}

/* Layout */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4rem;
}

/* Hero */
.hero {
    text-align: center;
    padding-top: 4rem;
}

.badge {
    background: rgba(129, 140, 248, 0.1);
    border: 1px solid rgba(129, 140, 248, 0.2);
    color: var(--accent-primary);
    padding: 0.5rem 1rem;
    border-radius: 99px;
    font-size: 0.875rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1.5rem;
}

h1 {
    font-family: var(--font-hero);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Glass UI Components */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

/* Upload Section */
.upload-section {
    width: 100%;
    max-width: 600px;
    border-radius: var(--radius);
    padding: 2rem;
    min-height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.drop-zone {
    border: 2px dashed rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.drop-zone:hover, .drop-zone.drag-over {
    border-color: var(--accent-primary);
    background: rgba(129, 140, 248, 0.03);
}

.icon-container {
    width: 64px;
    height: 64px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--accent-primary);
    transition: transform 0.3s ease;
}

.drop-zone:hover .icon-container {
    transform: translateY(-5px);
}

.icon-container svg {
    width: 32px;
    height: 32px;
}

.drop-zone h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.drop-zone p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.browse {
    color: var(--accent-primary);
    font-weight: 600;
    text-decoration: underline;
}

.file-limit {
    display: block;
    margin-top: 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.7;
}

/* Options */
.options-container {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.option-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.option-info {
    flex: 1;
}

.option-label {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.option-description {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* Switch Styling */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.1);
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

input:checked + .slider {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
}

input:focus + .slider {
    box-shadow: 0 0 1px var(--accent-primary);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

/* States */
.state-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.hidden { display: none !important; }

/* Loader */
.loader-wrapper {
    position: relative;
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
}

.loader {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 4px solid rgba(129, 140, 248, 0.1);
    border-top: 4px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loader-inner {
    position: absolute;
    top: 15px;
    left: 15px;
    width: 50px;
    height: 50px;
    border: 4px solid rgba(192, 132, 252, 0.1);
    border-bottom: 4px solid var(--accent-secondary);
    border-radius: 50%;
    animation: spin 1.5s linear infinite reverse;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    margin-top: 2rem;
    overflow: hidden;
}

.progress-bar {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* Success & Error Icons */
.success-icon, .error-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.success-icon {
    background: rgba(74, 222, 128, 0.1);
    color: #4ade80;
}

.error-icon {
    background: rgba(248, 113, 113, 0.1);
    color: #f87171;
}

/* Buttons */
.primary-btn, .secondary-btn {
    width: 100%;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    margin-top: 1.5rem;
}

.primary-btn {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(129, 140, 248, 0.3);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(129, 140, 248, 0.4);
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    width: 100%;
}

.feature-card {
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.feature-card h4 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Footer */
footer {
    margin-top: 2rem;
    padding-bottom: 4rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    opacity: 0.6;
}

/* Mobile Adjustments */
@media (max-width: 640px) {
    .container { padding: 1rem; }
    .hero { padding-top: 2rem; }
    .upload-section { padding: 1.5rem; }
}